STI5197 STMicroelectronics, STI5197 Datasheet - Page 2

• Manufacturer Part Number: STI5197
• Description: Low-cost Qam Demodulator And Mpeg2 Decoder For Set-top Box Applications
• Manufacturer: STMicroelectronics

Description
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Description
General
The STi5197 uses state of the art process technology to provide an ultra low cost, full
featured, SD set-top box SOC. It is a highly integrated solution combining QAM
demodulation, audio/video decoding and applications processing into a single chip, suitable
for MPEG2 based Cable networks worldwide.
The STi5197 provides a solution for operators to specify a range of low cost SD STBs
including low cost Zappers, Interactive STBs and DVR-capable STBs, with content delivery
using broadcast or broadband networks, or both (Hybrid STBs).
The STi5197 is optimized for secure Pay-TV applications with integrated DVB, DES, Multi2
and ICAM descramblers and Smart Card interfaces. It also has advanced security features
normally found in mid-to-high end devices to further safeguard operator and content
investment.
The STi5197 offers enhancements in performance, features and integration to current users
of ST’s MPEG2 SD family of audio/video decoders and QAM demodulators, whilst reducing
cost and time-to-market for the next generation of deployments. Few external components
are required to realize a complete STB solution, resulting in very low BOM cost.
Main features
The STi5197 integrates in a single IC, QAM demodulation, FEC, Multi-stream transport
demux, applications CPU, audio/video decode, video processing, graphics and display,
advanced security, STB peripherals, audio/video DACs, digital audio/video outputs, USB 2.0
host controller/ULPI and Ethernet MAC MII/RMII.
QAM demodulator/FEC
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High-performance 12-bit A/D converter suitable for direct IF architecture in all
QAM (quadrature amplitude modulation) modes
Demodulation and decoding of ITU-T J.83-Annexes A/B/C and DVB-C bit streams
Full digital demodulation
Variable symbol rates
Supports 16, 32, 64, 128 and 256 point constellations
Front derotator for better low symbol rate performance and relaxed tuner
constraints
Integrated matched filtering
Robust integrated adaptive pre and post equalizer
On-chip Forward Error Correction (FEC) supporting Annexes A, B and C, with
ability to bypass individual blocks
Two AGC outputs suitable for delayed AGC applications (sigma-delta outputs)
Integrated signal quality monitors, plus lock indicator
Processes Japanese transport stream multiplex frame (TSMF)
STi5197